Pocket pressure-gage.



F. SO HUBERT.

POUKET PRESSURE GAGE.

APPLIUATION FILED NOV. 17, 1910.

M7SB Patented June 13, 1911.

(W Ill ATTORNEY WETNESSES:1 INVENTOR Frederick S g/amber? rnnnnmcxsex-runner, or snntnnsvrnnn, PENNSYLVANIA.

POCKET PRESSURE-GAGE.

all whom it may concern: Be it known that I, FREDERICK Sonoesnr,

. a citizen of the United States, and resident of Sellersville, in thecounty ot Bucks and State of Pennsylvania, have invented certain newanduseful Improvements in Pocket. Pressure-Gages, of which the followingis a specification. d

This invention relates to pocket pressure test gages for pneumatic tiresand other purposes andhas for its object to produce a small convenientdevice for quickly ascertaining the maximum pressure of a pneumatic tireand the like, without. loss of air false reading.

and. withouththe possibility of getting a TIn-m )endin a) licationSerial Numher 584,459, for a similar device, I show internal. means forresetting the hand to zero after a reading has been made, and in thepresent invention the movement and indicator is set back to zero by aplunger or push button which extends through the side of the ,case aswill be more fully hereinafter described.

Tlie'accoinpanying drawings illustrate the preferred embodiment of theinvention but it is understood that changes, variations andmodifications can he resorted to which come within the scope of theclaims. hereunto appended. In the drawings, wherem like referencecharacters denote corresponding parts in the several views, Figure .1,is a front elevation, the glass and rim being removed. the dial brokenaway in part and the frame for the movement being shown in part bydotted lines for clearness of illustration: the socket is shown incenter section. Fig. 2 is a cross sectional view on dot and dash line 22of Fig. 1. and Fig. 3 is an elevation of the sector, pinion, indicatorand plunger in the position assumed when movement and indieator isreturned to zero.

For convenience in carrying, the gage is inclosed in a case, 1, similarin size. and appearance to the electrical pocket meters used to quicklydetermine the strength of an electric current, 'the complete casecomprising the glass cover, 2,.glass rim, 2, back cover, 3, ring, 4,riug'stud, 5, and knob, (3:

the ring 4, is pivoted in the stud as usual,

and the knob and stud may be of onepiece, for the reason that. it isonly used to press the case down upon a tire nipple, as the socket, 7,is iliametrically'opposite the knob.

v The dial, 8, is held in place in any preferred 14, in which the pinionsn 1n; 15,=and;

' Specification of Illetters'Patent, Patent d Juh 13 i i' pp i n filedNovember 17, 1910. Serial No. 592,798.

manner; the movement proper may plet-ely mounted on a base plate; 9. ABourdon-tube spring, 10, is "fastened to the lower part of thecase,.whe'n e it eom munieates with ahollow pin, 11,6611- trallysituated within the socket, 7, whichi; socket is rovided with asoftrubber lini ti 12, slight y tapered, to adapt it to slip-over'eti'any standard tire nipplen0t shown. 'T'he" free end of the Bou'rdon-tubesringf is'j capped, a book, 13, being' referaibl 01 dered ator near theend ass The movement consists'ofa. bearing 'e sector, 16, are journaled;th's erably mounted on two posts', 17,1 are fastened tothe base plate.The

f ms x srre which has teeth, 19; on the periphery ofthe alr c,"afs 7 5usual, which engage the pinion,' 20, Th

0 free end of the sector is preferably divided into two'curvedwings, theone wing,-'21, having a slot, 22, in'whieh a stud, 23, is ad justablymounted; the other wing, 24, h1is a reverse curve, the are, 24, being soShaped that when the plunger, 25, is pushed inward .as shown in Fig.3-41; will slide along the periphery of the curve or are, for thepurpose explained in the operation. '85 The plunger is centrally mountedin a. socket, 26, which is fastened at Ya proper point in the case,having a male thread, 26', upon which a cap, 27, is screwed for pr0-tection: a coiled spring, .28, keeps the plunger distondedby pressingoutwardly against the button, 29. I

A friction spring, 30, soldered on the base plate, is used to pressagainst the pinion shaft, 15, for holding the indicator or pointer, 31,at the maximum point, 'said indieator being mounted on the pinion shaftabove the dial, which is marked as usual.

In Fig. 1,- the Bourdon-tubc sprin -is shown in a normal position, thedotted circle pin opening the valve and letting the air enter up throughthe pin into the Bourdontube sin-mg, \\'lll('ll dislends aecord1ng, to

the pressure; The age is removed and the pressure indicated ,y thepointer and the dial,-is noted. In testing, the hook pulls the A sectoronly in one direction under pressure;

' as soon as the pressure is released the Bourdon-tube' spring and hook:return to their normal position, (shownin Fig. 1) leaving To reset thethe indicator and movement, however, in exactly the same position aswhen under pressure, the friction of the spring, 30, against the pinionshaft tending to hold the pointer or indicator at the maximum point,ointer and movement to zero, the plunger 18 pushed inward, the head orend striking the are, 24; of the wing, 24, of the sector (as shown inFig. 3) whereby the pinion is rotated and the pointer brought to zero.The plunger is drawn back out of the-path of the wing, 24, by the coiledspring 28. What 1 claim is: 1, In a pressure gage, a case rovided withalfsocket at its lower end, sai socket being lined with a flexiblematerial a hollow in ,in said socket, a Bourdon-tube spring as- ,tenedto saidcase, said Bourdon-tube spring {having communication with said inand socket, a hook on the free end of said Bourdonstube spring, a sectorprovided .at its free end with two oppositelyrurved wings, a stud on oneof said wings to be engaged by the hook on said spring, a pinion mountedupon a pinion shaft and engaging said sector, an indicator surmountinsaid pinion shaft, a dial upon which the in icator shows the'pressure,and means extending through the side of said case for e'nga ement withthe other of said sector wings or resetting the pointer to zero.

2. In a pocket pressurega e for pneumatic tires, a case provided wit asocket on its periphery, said socket being adapted to make an air-tightjoint with a tire nipple, a Bourdon-tube spring fastened to said case,

a hollow pin centrally placed in said socket '3. In a pocket pressuregage for pneumatic tires, a case provided with means for connecting witha pneumatic tire, a movement in said case comprising a Bourdon-tubespring having a communication with said connecting means, a sector, awing carried by the sector, a pinion mounted on a pinion shaft andengaging said sector, a pointer on said pinion shaft a dial upon whichthe pointer indicates the-pressure, means on the free end of saidBourdon-tube spring for engagement with the sector to operate the latterin one direction only, and means ex tending through' the side of thecase for engagement with the wing carried by the sector to move thelatter in the opposite direction for resetting the pointer to zero.

, Signed at Se1lersville, in the county of Bucks and State ofPennsylvania, this 15th day of November, A. D. 1910.

. I FREDERICK SCI-IUBERT.

Witnesses:

' RICHARD WEBCHAN,

WILLIAM A. HEINRICHS.

